Speaker 1: Audible dot com is the leading provider of downloadable digital
Speaker 1: audio books and spoken word entertainment. Audible has over one
Speaker 1: thousand titles to choose from to be downloaded to your
Speaker 1: iPod or MP three player. Go to audible podcast dot
Speaker 1: com slash brain Stuff to get a free audio book
Speaker 1: download of your choice when you sign up today. Welcome
Speaker 1: to brain Stuff from how stuff works dot com where
Speaker 1: smart happens. Hi, I'm Marshall Brain with today's question. When
Speaker 1: I stand at the water's edge and look out over
Speaker 1: the ocean, how far away is the horizon. One of
Speaker 1: the funniest things about the ocean is the fact that
Speaker 1: its surface is curved. We tend to think about water
Speaker 1: forming large flat sheets, but the surface of a body
Speaker 1: of water is not actually flat at all. It follows
Speaker 1: the curvature of the Earth because of the curvature of
Speaker 1: the planet. The distance between you and the horizon when
Speaker 1: you look out over the ocean depends on your height
Speaker 1: above the surface of the water. If your eyes are
Speaker 1: eight inches above the water, the distance to the horizon
Speaker 1: is about a mile. If you're six ft tall and
Speaker 1: standing right at the water's edge, then your eyes are
Speaker 1: about five and a half feet above the surface. The
Speaker 1: distance to the horizon is about three miles in that case.
Speaker 1: For more on this and thousands of other topics. Because
Speaker 1: it how staff works dot com, streaming TV shows and
Speaker 1: movies directly to your home is a breeze with Netflix.
Speaker 1: As a Netflix member, you can instantly watch TV and
Speaker 1: movies on your PC, Mac, mobile device, or television. Get
Speaker 1: a free thirty day trial membership. Go to Netflix dot com,
Speaker 1: slash stuff and sign up today.